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The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming

The Keystone district includes a group of mineralized shear zones and veins that are associated with the Keystone Quartz Diorite in the Medicine Bow Mountains of southwestern Wyoming. Gold production from this district is unknown, although some estimates suggest that 7,500 to more than 12,000 ounces were produced.

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• Royal Gold, Inc.
• Fairmile GoldTech, Inc.
• Gemcom Software Int'l Inc.
• Homestake Mining Company

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